package com.yinsin.security;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import com.yinsin.other.LogHelper;

public class SHA256 {
    private static final LogHelper log = LogHelper.getLogger(SHA256.class);
    
    public static String sha256(String decript) {
        try {
            MessageDigest digest = java.security.MessageDigest.getInstance("SHA-256");
            digest.update(decript.getBytes());
            byte messageDigest[] = digest.digest();
            // Create Hex String
            StringBuffer hexString = new StringBuffer();
            // 字节数组转换为 十六进制 数
            for (int i = 0; i < messageDigest.length; i++) {
                String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
                if (shaHex.length() < 2) {
                    hexString.append(0);
                }
                hexString.append(shaHex);
            }
            return hexString.toString();
        } catch (NoSuchAlgorithmException e) {
            log.error("SHA256 is error." + e.getMessage());
        }
        return "";
    }
    
    public static void main(String[] args) {
		System.out.println(sha256("1"));
	}
    
}
